<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="text" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addFn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(obj, index) in arr" :key="obj.id">
          <td>{{ index + 1 }}</td>
          <td>{{ obj.name }}</td>
          <td>{{ obj.age }}</td>
          <td>{{ obj.gender }}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="editFn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      name:"",
      age: 0,
      sex: "",
      arr: [
         { id:1, name:"Tom",age:19,gender: "男"},
         { id:1, name:"Jone",age:21,gender: "女"},
      ],
      selectIndex: "",
      flag: false,
    };
  },
  methods: {
    addFn() {
      if (this.name.length === 0 || this.age.length === 0) {
        alert("内容不能为空");
        return;
      }
      if (!this.flag) {
        this.arr.push({
          name:this.name,
          age: this.age,
          gender:this.sex,
        });
      }else{
        this.arr.splice(this.selectIndex, 1,{
          name:this.name,
          age:this.age,
          gender:this.sex,
        });
        this.flag = false;
      }
      this.name = "";
      this.age = 0;
      this.sex = "";
    },
    editFn (i) {
       this.name = this.arr[i].name;
       this.age = this.arr[i].age;
       this.sex = this.arr[i].sex;
       this.selectIndex = this.findIndex((obj) => obj.id === i + 1);
       this.flag = true;
    },
    delFn(index) {
      this.arr.splice(index, 1);
    },
  },
};
</script>
<style scoped></style>
